Home / 21,141.14-29,174.98-11,709.90

Finding the Fourth Proportional to 21,141.14, 29,174.98 and 11,709.90

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Solution

The fourth proportional to 21,141.14, 29,174.98 and 11,709.90 is: 16,159.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.14 : 29,174.98 = 11,709.90 : x
  2. Step 2: Convert to fraction form
    21,141.14/29,174.98 = 11,709.90/x
  3. Step 3: Cross multiply
    21,141.14x = 29,174.98 × 11,709.90
  4. Step 4: Simplify right side
    21,141.14x = 341,636,098.30
  5. Step 5: Solve for x
    x = 341,636,098.30/21,141.14
  6. Step 6: Final answer
    x = 16,159.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.